Principal Investigator(s):
United States Department of Health and Human Services. Centers for Disease Control and Prevention. National Center for Health Statistics

Summary:

The National Health and Nutrition Examination Survey I
Epidemiologic Follow-Up Study (NHEFS) is a longitudinal study which
uses as its baseline those adult persons aged 25 to 74 years who were
examined in the first National Health and Nutrition Examination Survey
(NHANES I). The NHEFS surveys were designed to investigate the
association between factors measured at the baseline and the
development of specific health conditions. The NHEFS is comprised of a
series of follow-up surveys, three of which have been completed. The
first wave of data collection, the 1982-1984 NHEFS (ICPSR 8900),
included all persons who were between 25 and 74 years of age at their
NHANES I examination. The second wave of data collection, the 1986
NHEFS (ICPSR 9466), included the NHEFS cohort who were 55-74 years at
their baseline examination and not known to be deceased at the time of
the 1982-1984 NHEFS. The third wave, the 1987 NHEFS, was conducted for
the entire nondeceased NHEFS cohort. The 1982-1984 NHEFS consisted of
five steps. The first step focused on tracing and locating all subjects
in the cohort or their proxies and determining their vital status. The
second step involved obtaining death certificates for subjects who were
deceased. Interviews with the participants or their proxies constituted
the third phase of the follow-up. The fourth phase of the follow-up
included measurements of pulse, blood pressure, and weight for
interviewed respondents, and the fifth step was the acquisition of
relevant hospital and nursing home records, including pathology reports
and electrocardiograms. The 1986 NHEFS assessed changes to the health
and functional status of the oldest members of the NHEFS cohort since
the last contact period. The 1987 NHEFS also collected information on
changes in the health and functional status of the NHEFS cohort since
the last contact period. The Vital and Tracing Status file contains
summary information about the status of the entire NHEFS cohort. The
Health Care Facility Record file contains information on reports of
stays in hospitals and nursing homes as well as information abstracted
from facility medical records. The Mortality Data file contains data
abstracted from the death certificates from all three NHEFS surveys.
The Interview Data file contains information on selected aspects of the
subject's health history since the time of the NHANES I exam.

The National Health and Nutrition Examination Survey I
Epidemiologic Follow-Up Study (NHEFS) is a longitudinal study which
uses as its baseline those adult persons aged 25 to 74 years who were
examined in the first National Health and Nutrition Examination Survey
(NHANES I). The NHEFS surveys were designed to investigate the
association between factors measured at the baseline and the
development of specific health conditions. The NHEFS is comprised of a
series of follow-up surveys, three of which have been completed. The
first wave of data collection, the 1982-1984 NHEFS (ICPSR 8900),
included all persons who were between 25 and 74 years of age at their
NHANES I examination. The second wave of data collection, the 1986
NHEFS (ICPSR 9466), included the NHEFS cohort who were 55-74 years at
their baseline examination and not known to be deceased at the time of
the 1982-1984 NHEFS. The third wave, the 1987 NHEFS, was conducted for
the entire nondeceased NHEFS cohort. The 1982-1984 NHEFS consisted of
five steps. The first step focused on tracing and locating all subjects
in the cohort or their proxies and determining their vital status. The
second step involved obtaining death certificates for subjects who were
deceased. Interviews with the participants or their proxies constituted
the third phase of the follow-up. The fourth phase of the follow-up
included measurements of pulse, blood pressure, and weight for
interviewed respondents, and the fifth step was the acquisition of
relevant hospital and nursing home records, including pathology reports
and electrocardiograms. The 1986 NHEFS assessed changes to the health
and functional status of the oldest members of the NHEFS cohort since
the last contact period. The 1987 NHEFS also collected information on
changes in the health and functional status of the NHEFS cohort since
the last contact period. The Vital and Tracing Status file contains
summary information about the status of the entire NHEFS cohort. The
Health Care Facility Record file contains information on reports of
stays in hospitals and nursing homes as well as information abstracted
from facility medical records. The Mortality Data file contains data
abstracted from the death certificates from all three NHEFS surveys.
The Interview Data file contains information on selected aspects of the
subject's health history since the time of the NHANES I exam.

Study Description

Citation

United States Department of Health and Human Services. Centers for Disease Control and Prevention. National Center for Health Statistics. National Health and Nutrition Examination Survey I: Epidemiologic Follow-Up Study, 1987. ICPSR09854-v1. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 1992. https://doi.org/10.3886/ICPSR09854.v1

Per agreement with NCHS, ICPSR distributes the data
file(s) and technical documentation in this collection in their
original form as prepared by NCHS. The NHEFS subject identification
number (Sample Sequence Number) is located in tape positions 12-16.
This number is unique for each subject and can be used when linking the
NHEFS and NHANES I Public Use Data Tapes.

Methodology

Restrictions: In preparing the data tapes for this collection, the
National Center for Health Statistics (NCHS) has removed direct
identifiers and characteristics that might lead to identification of
data subjects. As an additional precaution, NCHS requires, under
section 308(d) of the Public Health Service Act (42 U.S.C. 242m), that
data collected by NCHS not be used for any purpose other than
statistical analysis and reporting. NCHS further requires that analysts
not use the data to learn the identity of any persons or establishments
and that the director of NCHS be notified if any identities are
inadvertently discovered. ICPSR member institutions and other users
ordering data from ICPSR are expected to adhere to these restrictions.

Version(s)

Original ICPSR Release: 1993-02-12

Version History:

2006-01-12 All files were removed from dataset 5 and flagged as study-level files, so that they will accompany all downloads.